US4822411A - Integrated steel mill arrangement - Google Patents

Integrated steel mill arrangement Download PDF

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Publication number
US4822411A
US4822411A US07/035,988 US3598887A US4822411A US 4822411 A US4822411 A US 4822411A US 3598887 A US3598887 A US 3598887A US 4822411 A US4822411 A US 4822411A
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United States
Prior art keywords
gas
plant
converter
reformer
direct reduction
Prior art date
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Expired - Fee Related
Application number
US07/035,988
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English (en)
Inventor
Gerhard Standler
Siegfried Zeller
Konstantin Milionis
Rudolf Zeller
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Primetals Technologies Austria GmbH
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Voestalpine AG
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Application filed by Voestalpine AG filed Critical Voestalpine AG
Assigned to VOEST-ALPINE AKTIENGESELLSCHAFT reassignment VOEST-ALPINE AKTIENGESELLSCHAFT ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: MILIONIS, KONSTANTIN, STANDLER, GERHARD, ZELLER, RUDOLF, ZELLER, SIEGFRIED
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Assigned to VOEST-ALPINE INDUSTRIEANLAGENBAU GESELLSCHAFT M.B.H. reassignment VOEST-ALPINE INDUSTRIEANLAGENBAU GESELLSCHAFT M.B.H. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: VOEST-ALPINE AKTIENGESELLSCHAFT
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/10—Reduction of greenhouse gas [GHG] emissions
    • Y02P10/122—Reduction of greenhouse gas [GHG] emissions by capturing or storing CO2
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/10—Reduction of greenhouse gas [GHG] emissions
    • Y02P10/134—Reduction of greenhouse gas [GHG] emissions by avoiding CO2, e.g. using hydrogen
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Definitions

  • the invention relates to an integrated mill comprising a coking plant, a blast furnace arrangement and a converter steelworks.
  • molten pig iron is required. This is produced in the blast furnace arrangement by means of high-grade metallurgical coke, the latter being supplied from the coking plant.
  • solid iron carriers, in particular scrap are fed to the converters as coolants, the addition of external scrap sometimes having the disadvantage that undesired accompanying elements that cannot be removed will be introduced into the steel produced.
  • cupola gases such as coke oven gas and converter exhaust gases
  • cupola gases so far, have been utilized only partially, e.g., for heating purposes, to generate steam or--at a low efficiency only--to produce current.
  • the invention aims at avoiding these disadvantages and has as its object to render the incurring cupola gases, i.e., coke oven gas and converter exhaust gases, in an integrated mill of the initially defined kind utilizable at a better efficiency than so far, to increase, at the same time, the amount of steel produced without expansion of the capacities of the blast furnace arrangement and of the coking plant, and to ensure a high purity of the steel by largely excluding impurities of an unknown kind.
  • cupola gases i.e., coke oven gas and converter exhaust gases
  • a further significant aim of the present invention consists in reducing the specific energy consumption per ton of crude steel produced, i.e., the amount of primary energy required per ton of crude steel.
  • This object is achieved according to the invention in that a plant for directly reducing iron ore is additionally adjoined to the mill, that the ducts for the exhaust gas from the converters and the coke oven gas ducts from the coking plant are connected to a reformer to produce reducing gas substantially containing CO and H 2 , and that the reformer is connected with the direct reduction plant via a reducing gas duct.
  • the direct reduction plant may comprise one or several shaft furnaces.
  • a gas reservoir is arranged in the exhaust ducts from the converters to the reformer.
  • the exhaust gas discontinuously incurring from the converters during blowing is collected in the gas reservoir or balancing vessel and may be continuously given off to the reformer.
  • the sponge iron produced in the direct reduction plant suitably is charged into the converters.
  • the sponge iron produced in the direct reduction plant is charged into the converters in hot condition.
  • even solid carbon carriers are introduced into the metal melt contained in the converters in order to reduce iron oxide residues still contained therein and to adjust the desired carbon content.
  • the reducing gas extracted from top of the direct reduction plant and partially reacted and, if desired, a portion of the exhaust gas from the converters are largely freed from the carbon dioxide contained therein, and the deacidified gas mixture thus obtained is admixed with the reducing gas as recirculating gas.
  • a mill according to the invention is illustrated in the drawing by way of a block diagram.
  • the mill comprises a coking plant denoted by 1 in the block diagram; from this, coke oven gas is extracted via a duct 2, the solid coke, via a conveyor 3, getting into the blast furnace arrangement 4, of which just one blast furnace is schematically illustrated.
  • the latter is charged from the ore feeder 5 also with lumpy ore--if desired, in sintered condition.
  • Blast furnace gas is discharged through duct 4'.
  • the pig iron produced in the blast furnace is transferrd into the converter steelworks 6, which may comprise several converters, and is converted into crude steel. Scrap may be added via conveying duct 6'.
  • the converter exhaust gas forming during the conversion (blowing) process is extracted by duct 7, the crude steel produced is tapped from the converters.
  • a gas cooling and purifying means 8 as well as a compressor 9 are provided. Furthermore, it is suitable to install a gas reservoir 10 in the exhaust duct 7.
  • the plant parts described are combined with a plant 11 for the direct reduction of iron ore, which--as illustrated--advantageously is designed as at least one shaft furnace.
  • This direct reduction plant 11 is charged with lumpy ore or pellets from the ore feeder 5 via duct 12.
  • the converter exhaust gas duct 7, at 13, is united with the coke oven gas duct 2, in which a means 14 for purifying and cooling the coke gas as well as a compressor 15 are provided, the mixed gas being conducted into a reformer 16.
  • a reducing gas essentially consisting of CO and H 2 is produced from this mixed gas, which is fed into the direct reduction plant 11 via a reducing gas duct 17.
  • the sponge iron formed is removed from the direct reduction plant 11 and--optionally in a hot-briquetted state from a briquetting means (not illustrated) following upon the reduction plant--is charged into the converters of the converter steelworks 6 by a transporting means 18.
  • the partially reacted reducing gas, the exhaust gas from the direct reduction plant or top gas from top of the direct reduction plant 11 is discharged through a top gas duct 19, in which, in the exemplary embodiment illustrated, a gas cooling and purifying aggregate 20 as well as a compressor 21 are incorporated.
  • Part of the top gas, upon compression in the compressor 21, may be fed into the converter exhaust gas conducting duct 7 via duct 22 illustrated in broken lines and supplied to the reformer 16.
  • the duct 24 branching off at 23 takes purified top gas to the reformer 16, where it is suitably burnt to heat the catalyst pipes of the reformer.
  • the thermal content of the combustion gas extracted from the reformer through duct 25, according to the embodiment illustrated, is still utilized in recuperators 26 and 27 to preheat the coke oven gases in duct 2 as well as the converter exhaust gases in duct 7.
  • the converter exhaust gas duct 7 may be connected with the top gas duct 19 by means of an admixing duct 28, wherein, in a mixing head 29, the quantitative portions of the gases supplied through a recirculating gas duct 30 leading away from the mixing head 29 and through the reducing gas duct 17 for the direct reduction plant 11 may be controlled.
  • a means 31 for separating CO 2 (deacidification) from the purified and compressed top gas, optionally mixed with converter exhaust gas, as well as for preheating the deacidified gas mixture is incorporated in the recirculating gas duct 30.
  • purified top gas from duct 24 may be supplied to means 31 through branch duct 32.
  • each individual duct blocking, diverting and controlling organs (not illustrated) may additionally be provided.
  • the plants united to such a mill may have the following capacities to produce 4.2 ⁇ 10 6 tons per year (t.p.y.) of crude steel:
  • the following exemplary embodiment serves, which has been based on the production of 1 ton crude steel (CS) by using an integrated mill operating in the manner described above.
  • Blast furnace gas for one part is burnt in the mill itself (preheating furnaces), for the other part is converted into current in a power station.
  • the charging substances and the products had the following compositions:
  • a comparison of the energy balance for the production of 1 ton crude steel in an integrated mill according to the invention with that of a conventional mill operating without direct reduction plant shows a reduction of the specific energy consumption (based on one ton crude steel produced) of about 1.77 GJ (about 21.77 GJ/t crude steel conventionally as compared to about 20.0 GJ/t crude steel according to above example).

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Manufacture Of Iron (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Casings For Electric Apparatus (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
US07/035,988 1986-05-07 1987-04-08 Integrated steel mill arrangement Expired - Fee Related US4822411A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP86890130 1986-05-07
EP19860890130 EP0244551B1 (de) 1986-05-07 1986-05-07 Integriertes Hüttenwerk

Publications (1)

Publication Number Publication Date
US4822411A true US4822411A (en) 1989-04-18

Family

ID=8196566

Family Applications (1)

Application Number Title Priority Date Filing Date
US07/035,988 Expired - Fee Related US4822411A (en) 1986-05-07 1987-04-08 Integrated steel mill arrangement

Country Status (5)

Country Link
US (1) US4822411A (de)
EP (1) EP0244551B1 (de)
JP (1) JP2701841B2 (de)
AT (1) ATE51032T1 (de)
DE (1) DE3669534D1 (de)

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT396255B (de) * 1991-09-19 1993-07-26 Voest Alpine Ind Anlagen Anlage und verfahren zur erzeugung von roheisen und eisenschwamm
US5259864A (en) * 1992-10-06 1993-11-09 Bechtel Group, Inc. Method of disposing of environmentally undesirable material and providing fuel for an iron making process e.g. petroleum coke
US5320676A (en) * 1992-10-06 1994-06-14 Bechtel Group, Inc. Low slag iron making process with injecting coolant
US5338336A (en) * 1993-06-30 1994-08-16 Bechtel Group, Inc. Method of processing electric arc furnace dust and providing fuel for an iron making process
US5354356A (en) * 1992-10-06 1994-10-11 Bechtel Group Inc. Method of providing fuel for an iron making process
US5380352A (en) * 1992-10-06 1995-01-10 Bechtel Group, Inc. Method of using rubber tires in an iron making process
US5397376A (en) * 1992-10-06 1995-03-14 Bechtel Group, Inc. Method of providing fuel for an iron making process
US5429658A (en) * 1992-10-06 1995-07-04 Bechtel Group, Inc. Method of making iron from oily steel and iron ferrous waste
US5958107A (en) * 1993-12-15 1999-09-28 Bechtel Croup, Inc. Shift conversion for the preparation of reducing gas
AT406481B (de) * 1995-04-25 2000-05-25 Voest Alpine Ind Anlagen Verfahren zur herstellung von flüssigem roheisen oder flüssigen stahlvorprodukten und eisenschwamm sowie anlage zur durchführung des verfahrens
AT406586B (de) * 1995-04-25 2000-06-26 Voest Alpine Ind Anlagen Verfahren zur herstellung von flüssigem roheisen oder flüssigen stahlvorprodukten und eisenschwamm sowie anlage zur durchführung des verfahrens
WO2000047780A2 (en) * 1999-02-02 2000-08-17 Hylsa, S.A. De C.V. Method and apparatus for preheating of direct reduced iron used as feed to an electric arc furnace
US6197088B1 (en) 1992-10-06 2001-03-06 Bechtel Group, Inc. Producing liquid iron having a low sulfur content
DE19951191A1 (de) * 1999-10-22 2001-05-17 Thyssen Krupp Encoke Gmbh Verfahren und Vorrichtung zur Ableitung von heissen Rohgasen, die bei einer Verkokung in den Ofenkammern einer Koksofenbatterie entstehen
US6264723B1 (en) * 1998-06-10 2001-07-24 Sms Schloemann-Siemag Aktiengesellschaft Method for manufacturing steel
US20020047230A1 (en) * 1997-07-07 2002-04-25 Jgc Corporation Method of operating multi-industry integrated complex for basic industrial plants
US20040226406A1 (en) * 2003-05-15 2004-11-18 Hylsa, S.A. De C.V. Method and apparatus for improved use of primary energy sources in integrated steel plants
US20090114062A1 (en) * 2005-12-02 2009-05-07 Lutz Rose Method of and smelter for producing steel with high manganese and low carbon content
US20110041517A1 (en) * 2008-05-16 2011-02-24 Jfe Steel Corporation Method for reforming exhaust gas generated from metallurgical furnace, method for cooling exhaust gas and apparatus therefor
US8496730B2 (en) 2010-05-14 2013-07-30 Midrex Technologies, Inc. System and method for reducing iron oxide to metallic iron using coke oven gas and oxygen steelmaking furnace gas
US20130312571A1 (en) * 2010-05-14 2013-11-28 Midrex Technologies, Inc. System and method for reducing iron oxide to metallic iron using coke oven gas and oxygen steelmaking furnace gas
WO2015016950A1 (en) 2013-07-31 2015-02-05 Midrex Technologies, Inc. Reduction of iron oxide to metallic iron using coke oven gas and oxygen steelmaking furnace gas
US9127326B2 (en) 2010-05-14 2015-09-08 Midrex Technologies, Inc. System and method for reducing iron oxide to metallic iron using natural gas
JP2018024896A (ja) * 2016-08-08 2018-02-15 新日鐵住金株式会社 還元鉄の製造方法および溶鋼の製造方法ならびに還元鉄製造工程を含む高炉製鉄所
US10113209B2 (en) 2015-01-20 2018-10-30 Midrex Technologies, Inc. Methods and systems for producing high carbon content metallic iron using coke oven gas
IT202100026993A1 (it) * 2021-10-20 2023-04-20 Wurth Paul Sa "procedimento per il funzionamento di un impianto siderurgico, impianto siderurgico, e procedimento di conversione di un impianto siderurgico"

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5064330B2 (ja) * 2008-08-11 2012-10-31 新日本製鐵株式会社 還元鉄及び銑鉄の製造方法
WO2011099070A1 (ja) * 2010-02-10 2011-08-18 新日本製鐵株式会社 還元鉄の製造方法及び銑鉄の製造方法
DE102013113933A1 (de) * 2013-12-12 2015-06-18 Thyssenkrupp Ag Verfahren zur Erzeugung von Synthesegas im Verbund mit einem Hüttenwerk
DE102013113958A1 (de) * 2013-12-12 2015-06-18 Thyssenkrupp Ag Anlagenverbund zur Stahlerzeugung und Verfahren zum Betreiben des Anlagenverbundes
DE102013113921A1 (de) 2013-12-12 2015-06-18 Thyssenkrupp Ag Anlagenverbund zur Stahlerzeugung und Verfahren zum Betreiben des Anlagenverbundes
DE102013113913A1 (de) 2013-12-12 2015-06-18 Thyssenkrupp Ag Anlagenverbund zur Stahlerzeugung und Verfahren zum Betreiben des Anlagenverbundes
DE102013113950A1 (de) 2013-12-12 2015-06-18 Thyssenkrupp Ag Anlagenverbund zur Stahlerzeugung und Verfahren zum Betreiben des Anlagenverbundes

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US4007034A (en) * 1974-05-22 1977-02-08 Fried. Krupp Gesellschaft Mit Beschrankter Haftung Method for making steel
US4234624A (en) * 1978-03-07 1980-11-18 Asea Aktiebolag Method of applying an insulation of cross-linked polymer on a cable conductor
US4575394A (en) * 1980-04-08 1986-03-11 Nixon Ivor G Metallurgical processes

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US3653874A (en) * 1970-01-02 1972-04-04 Koppers Co Inc Production of metal pellets from metallic oxides
DE2112369B2 (de) * 1971-03-15 1973-03-15 Steag Ag, 4300 Essen Verfahren zum betreiben einer koksofenbatterie in verbindung mit einer reduktionsgas bzw. synthesegas benoetigenden anlage
FR2174796A1 (en) * 1972-03-10 1973-10-19 Erim Reducing ferrous minerals - using treated furnace mouth gases
US4053301A (en) * 1975-10-14 1977-10-11 Hazen Research, Inc. Process for the direct production of steel
DE2638348A1 (de) * 1976-08-26 1978-07-13 Didier Eng Verfahren zur weiterverarbeitung von koksofengas
US4253867A (en) * 1979-10-15 1981-03-03 Hylsa, S.A. Method of using a methane-containing gas for reducing iron ore
DE3318005C2 (de) * 1983-05-18 1986-02-20 Klöckner CRA Technologie GmbH, 4100 Duisburg Verfahren zur Eisenherstellung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4007034A (en) * 1974-05-22 1977-02-08 Fried. Krupp Gesellschaft Mit Beschrankter Haftung Method for making steel
US4234624A (en) * 1978-03-07 1980-11-18 Asea Aktiebolag Method of applying an insulation of cross-linked polymer on a cable conductor
US4575394A (en) * 1980-04-08 1986-03-11 Nixon Ivor G Metallurgical processes

Cited By (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT396255B (de) * 1991-09-19 1993-07-26 Voest Alpine Ind Anlagen Anlage und verfahren zur erzeugung von roheisen und eisenschwamm
US5630862A (en) * 1992-10-06 1997-05-20 Bechtel Group, Inc. Method of providing fuel for an iron making process
US5259864A (en) * 1992-10-06 1993-11-09 Bechtel Group, Inc. Method of disposing of environmentally undesirable material and providing fuel for an iron making process e.g. petroleum coke
US5320676A (en) * 1992-10-06 1994-06-14 Bechtel Group, Inc. Low slag iron making process with injecting coolant
US6197088B1 (en) 1992-10-06 2001-03-06 Bechtel Group, Inc. Producing liquid iron having a low sulfur content
US5354356A (en) * 1992-10-06 1994-10-11 Bechtel Group Inc. Method of providing fuel for an iron making process
US5380352A (en) * 1992-10-06 1995-01-10 Bechtel Group, Inc. Method of using rubber tires in an iron making process
US5397376A (en) * 1992-10-06 1995-03-14 Bechtel Group, Inc. Method of providing fuel for an iron making process
US5429658A (en) * 1992-10-06 1995-07-04 Bechtel Group, Inc. Method of making iron from oily steel and iron ferrous waste
US5470375A (en) * 1993-06-30 1995-11-28 Bechtel Group, Inc. Method of processing waste material containing non ferrous metal oxides
US5338336A (en) * 1993-06-30 1994-08-16 Bechtel Group, Inc. Method of processing electric arc furnace dust and providing fuel for an iron making process
US5958107A (en) * 1993-12-15 1999-09-28 Bechtel Croup, Inc. Shift conversion for the preparation of reducing gas
AT406481B (de) * 1995-04-25 2000-05-25 Voest Alpine Ind Anlagen Verfahren zur herstellung von flüssigem roheisen oder flüssigen stahlvorprodukten und eisenschwamm sowie anlage zur durchführung des verfahrens
AT406586B (de) * 1995-04-25 2000-06-26 Voest Alpine Ind Anlagen Verfahren zur herstellung von flüssigem roheisen oder flüssigen stahlvorprodukten und eisenschwamm sowie anlage zur durchführung des verfahrens
US20020047230A1 (en) * 1997-07-07 2002-04-25 Jgc Corporation Method of operating multi-industry integrated complex for basic industrial plants
US6264723B1 (en) * 1998-06-10 2001-07-24 Sms Schloemann-Siemag Aktiengesellschaft Method for manufacturing steel
WO2000047780A2 (en) * 1999-02-02 2000-08-17 Hylsa, S.A. De C.V. Method and apparatus for preheating of direct reduced iron used as feed to an electric arc furnace
WO2000047780A3 (en) * 1999-02-02 2001-07-26 Hylsa Sa Method and apparatus for preheating of direct reduced iron used as feed to an electric arc furnace
DE19951191C2 (de) * 1999-10-22 2001-08-23 Thyssen Krupp Encoke Gmbh Verfahren und Vorrichtung zur Ableitung von heissen Rohgasen, die bei einer Verkokung in den Ofenkammern einer Koksofenbatterie entstehen
DE19951191A1 (de) * 1999-10-22 2001-05-17 Thyssen Krupp Encoke Gmbh Verfahren und Vorrichtung zur Ableitung von heissen Rohgasen, die bei einer Verkokung in den Ofenkammern einer Koksofenbatterie entstehen
US20040226406A1 (en) * 2003-05-15 2004-11-18 Hylsa, S.A. De C.V. Method and apparatus for improved use of primary energy sources in integrated steel plants
WO2004101829A2 (en) * 2003-05-15 2004-11-25 Hylsa, S.A. De C.V. Method and apparatus for improved use of primary energy sources in integrated steel plants
WO2004101829A3 (en) * 2003-05-15 2005-03-10 Hylsa Sa Method and apparatus for improved use of primary energy sources in integrated steel plants
US6986800B2 (en) 2003-05-15 2006-01-17 Hylsa, S.A. De C.V. Method and apparatus for improved use of primary energy sources in integrated steel plants
US20090114062A1 (en) * 2005-12-02 2009-05-07 Lutz Rose Method of and smelter for producing steel with high manganese and low carbon content
US20110041517A1 (en) * 2008-05-16 2011-02-24 Jfe Steel Corporation Method for reforming exhaust gas generated from metallurgical furnace, method for cooling exhaust gas and apparatus therefor
US8765087B2 (en) * 2008-05-16 2014-07-01 Jfe Steel Corporation Method for reforming exhaust gas generated from metallurgical furnace, method for cooling exhaust gas and apparatus therefor
US20130312571A1 (en) * 2010-05-14 2013-11-28 Midrex Technologies, Inc. System and method for reducing iron oxide to metallic iron using coke oven gas and oxygen steelmaking furnace gas
US8685136B2 (en) 2010-05-14 2014-04-01 Midrex Technologies, Inc. System and method for reducing iron oxide to metallic iron using coke oven gas and oxygen steelmaking furnace gas
US8496730B2 (en) 2010-05-14 2013-07-30 Midrex Technologies, Inc. System and method for reducing iron oxide to metallic iron using coke oven gas and oxygen steelmaking furnace gas
US9028585B2 (en) * 2010-05-14 2015-05-12 Midrex Technologies, Inc. System and method for reducing iron oxide to metallic iron using coke oven gas and oxygen steelmaking furnace gas
US9127326B2 (en) 2010-05-14 2015-09-08 Midrex Technologies, Inc. System and method for reducing iron oxide to metallic iron using natural gas
RU2561573C2 (ru) * 2011-05-13 2015-08-27 Мидрэкс Текнолоджиз, Инк. Система и способ восстановления оксида железа до металлического железа с применением коксового газа и газа сталеплавильной кислородной печи
WO2015016950A1 (en) 2013-07-31 2015-02-05 Midrex Technologies, Inc. Reduction of iron oxide to metallic iron using coke oven gas and oxygen steelmaking furnace gas
EP3027778A4 (de) * 2013-07-31 2017-11-15 Midrex Technologies, Inc. Reduktion von eisenerzen zu metallischem eisen mittels koksofengas und sauerstoffaufblaskonvertergas
US10113209B2 (en) 2015-01-20 2018-10-30 Midrex Technologies, Inc. Methods and systems for producing high carbon content metallic iron using coke oven gas
JP2018024896A (ja) * 2016-08-08 2018-02-15 新日鐵住金株式会社 還元鉄の製造方法および溶鋼の製造方法ならびに還元鉄製造工程を含む高炉製鉄所
IT202100026993A1 (it) * 2021-10-20 2023-04-20 Wurth Paul Sa "procedimento per il funzionamento di un impianto siderurgico, impianto siderurgico, e procedimento di conversione di un impianto siderurgico"

Also Published As

Publication number Publication date
EP0244551B1 (de) 1990-03-14
JPS62267409A (ja) 1987-11-20
DE3669534D1 (de) 1990-04-19
EP0244551A1 (de) 1987-11-11
JP2701841B2 (ja) 1998-01-21
ATE51032T1 (de) 1990-03-15

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